Upper body exercise spring



FIG. 1 is a side view of the present device;

FIG. 2 is a perspective view of the present device along a downwardly slanted direction;

FIG. 3 is a straight on view of the right hand end of the present device; and,

FIG. 4 is a straight on view of the left hand end of the present device. 

CLAIM The ornamental design for an upper body exercise spring, as shown and described. 